题解 | #取近似值#

const rl = require("readline").createInterface({ input: process.stdin });

var iter = rl[Symbol.asyncIterator]();

const readline = async () => (await iter.next()).value;

void async function () {
    // Write your code here
    while(line = await readline()){
		// line输入是string类型，需要转成float类型
        const floatNum = parseFloat(line);
		// 强制类型转换，取出整数部分
        const intNum = parseInt(floatNum);
		// 两数作差和0.5作比较，小于取整数，大于向上取整
        if((floatNum - intNum) < 0.5) {
            console.log(intNum);
        } else {
            console.log(intNum + 1);
        }
    }
}()